Apologies if this has already been covered somewhere. One of our users
has noticed that MPI_COMPLEX16 is flagged as an invalid type in 1.5.4
but not in 1.4.3 while MPI_DOUBLE_COMPLEX is accepted for both. This is
with either gfortran or intel-fc. Superficially, the configure looks
the same for 1.4.3 and 1.5.4, eg.
% grep COMPLEX16 opal/include/opal_config.h
#define OMPI_HAVE_F90_COMPLEX16 1
#define OMPI_HAVE_FORTRAN_COMPLEX16 1